Inflammation of muscle tissue that may cause pain, weakness, and swelling.
Because myositis under diagnostic code 5021 is rated by reference to another condition's criteria, the evidence that helps your claim is evidence that captures the functional impact of your muscle inflammation as precisely as possible. Medical records documenting the diagnosis, treatment history, flare-up frequency, and any objective findings such as elevated muscle enzymes, imaging, or biopsy results establish the nature of the condition. Physical examination findings that measure strength, range of motion, and any loss of function in the affected muscles are directly relevant. Statements from you or people who know you describing how pain, weakness, or fatigue limit your ability to work, lift, walk, or carry out daily activities help show the real-world severity that objective tests alone may not fully capture.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.
